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Perinuclear :: Perinuclear (a.) Of or pertaining to a nucleus; situated around a nucleus; as, the perinuclear protoplasm..

Cytoplasm :: Cytoplasm (n.) The substance of the body of a cell, as distinguished from the karyoplasma, or substance of the nucleus..

Tercine :: Tercine (n.) A cellular layer derived from the nucleus of an ovule and surrounding the embryo sac. Cf. Quintine.

Intranuclear :: Intranuclear (a.) Within the nucleus of a cell; as. the intranuclear network of fibrils, seen in the first stages of karyokinesis..

Para- :: Para- () A prefix denoting: (a) Likeness, similarity, or connection, or that the substance resembles, but is distinct from, that to the name of which it is prefixed; as paraldehyde, paraconine, etc.; also, an isomeric modification. (b) Specifically: (Organ. Chem.) That two groups or radicals substituted in the benzene nucleus are opposite, or in the respective positions 1 and 4; 2 and 5; or 3 and 6, as paraxylene; paroxybenzoic acid. Cf. Ortho-, and Meta-. Also used adjectively..

Endoblast :: Endoblast (n.) Entoblast; endoplast. See Nucleus,.

Monera :: Monera (n. pl.) The lowest division of rhizopods, including those which resemble the amoebas, but are destitute of a nucleus..

Umbra :: Umbra (n.) The central dark portion, or nucleus, of a sun spot..

Karyokinesis :: Karyokinesis (n.) The indirect division of cells in which, prior to division of the cell protoplasm, complicated changes take place in the nucleus, attended with movement of the nuclear fibrils; -- opposed to karyostenosis. The nucleus becomes enlarged and convoluted, and finally the threads are separated into two groups which ultimately become disconnected and constitute the daughter nuclei. Called also mitosis. See Cell development, under Cell..

Pyridine :: Pyridine (n.) A nitrogenous base, C5H5N, obtained from the distillation of bone oil or coal tar, and by the decomposition of certain alkaloids, as a colorless liquid with a peculiar pungent odor. It is the nucleus of a large number of organic substances, among which several vegetable alkaloids, as nicotine and certain of the ptomaines, may be mentioned. See Lutidine..

Cytococcus :: Cytococcus (n.) The nucleus of the cytula or parent cell.

Phosphonium :: Phosphonium (n.) The hypothetical radical PH4, analogous to ammonium, and regarded as the nucleus of certain derivatives of phosphine..

Karyomiton :: Karyomiton (n.) The reticular network of fine fibers, of which the nucleus of a cell is in part composed; -- in opposition to kytomiton, or the network in the body of the cell..

Nucleolus :: Nucleolus (n.) A small rounded body contained in the nucleus of a cell or a protozoan.

Nucleated :: Nucleated (a.) Having a nucleus; nucleate; as, nucleated cells..

Nucleus :: Nucleus (n.) A visceral mass, containing the stomach and other organs, in Tunicata and some mollusks..

Nucleole :: Nucleole (n.) The nucleus within a nucleus; nucleolus.

Thiophthene :: Thiophthene (n.) A double thiophene nucleus, C6H4S2, analogous to thionaphthene, and the base of a large series of compounds..

Thionaphthene :: Thionaphthene (n.) A double benzene and thiophene nucleus, C8H6S, analogous to naphthalene, and like it the base of a large series of derivatives..

Nucleiform :: Nucleiform (a.) Formed like a nucleus or kernel.

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